Last updated: August 23, 2025
In Cayeux-sur-Mer, France, the average temperature in January hovers around 6°C (43°F). You'll experience a range with minimal lows of -3°C (27°F) and comfortable highs of 14°C (57°F). Be prepared for some wet days, as 83 mm (3.3 in) of precipitation is expected over 13 days. The air tends to be quite damp, with an average humidity of 91%.
In January in Cayeux-sur-Mer, the average temperature is 6°C (43°F), with maximums reaching 14°C (57°F) and minimums dropping as low as -3°C (27°F). Be prepared for chilly days and layer your clothing if you're planning to travel during this time.
In Cayeux-sur-Mer in January, the precipitation amount is 83 mm (3.3 in) over a span of 13 days.
In Cayeux-sur-Mer in January, humidity is 91%. With an average temperature of 6°C (43°F), this humidity feels like a thick blanket wrapped around you, making travel uncomfortable and sticky as every step becomes a challenge against the heavy, damp air.
In Cayeux-sur-Mer in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Cayeux-sur-Mer, you can visit Hourly UV Index in Cayeux-sur-Mer.
UV Risk Categories
Weather in Cayeux-sur-Mer varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Cayeux-sur-Mer, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (43°F) | 83 mm (3.3 inches) | 91% | low |
| February Weather | 7°C (44°F) | 75 mm (3.0 inches) | 89% | low |
| March Weather | 8°C (47°F) | 82 mm (3.2 inches) | 86% | moderate |
| April Weather | 10°C (51°F) | 31 mm (1.2 inches) | 85% | high |
| May Weather | 13°C (55°F) | 72 mm (2.8 inches) | 82% | high |
| June Weather | 16°C (62°F) | 65 mm (2.6 inches) | 81% | very high |
| July Weather | 18°C (65°F) | 50 mm (2.0 inches) | 76% | very high |
| August Weather | 18°C (65°F) | 79 mm (3.1 inches) | 73% | very high |
| September Weather | 16°C (62°F) | 71 mm (2.8 inches) | 80% | moderate |
| October Weather | 14°C (57°F) | 116 mm (4.6 inches) | 89% | moderate |
| November Weather | 10°C (49°F) | 101 mm (4.0 inches) | 92% | low |
| December Weather | 8°C (46°F) | 146 mm (5.7 inches) | 92% | low |